<style>
    h1{
        border: #454545 solid 5px;
        border-radius: 20px;

        padding: 15px;
        /* padding-left: 50px;
        padding-top: 30px;
        padding-bottom: 50px;
        padding-right: 30px; */

        margin: 50px;
        margin-left: 100px;
    }
</style>
<body>
    <h1>
        你好呀👏
    </h1>
</body>